White Sox left-hander John Danks was pulled in the second inning of Saturday’s game against the Nationals with a strained left oblique. He felt no improvement on Sunday morning when he arrived back at U.S. Cellular Field and so the Chicago front office made the only decision it could.

From Doug Padilla of ESPN Chicago comes word that Danks has been placed on the 15-day disabled list, with left-hander Hector Santiago joining the White Sox in a corresponding roster move.

Danks went 0-8 with a 5.25 ERA over his first 11 starts of the season, but he’s been far steadier since the beginning of June, allowing just three earned runs in his last 23 2/3 innings. That mini hot streak will have to be put on hold for the next three or four weeks.

The White Sox enter Sunday’s action with a disappointing 38-40 record, but they’re only three games behind the Indians and Tigers for first place in the American League Central. It’ll be a race to the finish.

A report from the Baltimore Sun’s Dan Connolly suggests that free agent catcher Welington Castillo currently tops the Orioles’ list of potential backstop targets for the 2017 season. With Matt Wieters on the market, the Orioles lack a suitable platoon partner for Caleb Joseph behind the dish, and Connolly adds that the club has been discussing a multi-year deal with Castillo’s representatives since the Winter Meetings.

Castillo batted .264/.322/.423 with the Diamondbacks in 2016, racking up 14 home runs and driving in a career-high 68 RBI in 457 PA. His bat provides much of his upside, and Connolly quoted an anonymous National League scout who believes that the 29-year-old’s defensive profile has fallen short of his potential in recent years.

For better or worse, both the Orioles and Castillo appear far from locking in a deal for 2017. Both the Rays and Braves have expressed interest in the veteran catcher during the past week, while the Orioles are reportedly considering Wieters, Nick Hundley and Chris Iannetta as alternatives behind the plate.

Nava began the season on a one-year contract with the Angels, during which he slashed .235/.309/.303 through 136 PA in the first half of 2016. He was flipped to the Royals in late August for a player to be named later and saw the remainder of his year go down the drain on an .091 average through 12 PA in Anaheim. After getting the boot from the Angels’ 40-man roster in November, the 33-year-old outfielder elected free agency.

Nava is expected to compete for a bench role on the Phillies’ roster in the spring. As it currently stands, the club’s projected 2017 outfield features Howie Kendrick and Odubel Herrera, with precious little depth behind them. Nava’s bat is underwhelming, but at the very least he offers the Phillies a warm body in left field and a potential platoon partner for one of their younger options, a la Tyler Goeddel or Roman Quinn.